ip Resistors Welwyn Compon Low Value 3W Resistors Low Value 3W ChipValue Resistors Low 3W Chip Resistors Chip Resistors Welwyn Components Welwyn Components W Series atts @ 70C LRF3W Series Series stance LRF3W range from 0.003 to 1 LRF3W Series * 33W Watts @ package 70C in 1225 rances *toResistance 1% 3 Watts @range 70C range from 0.003 to 1 Resistance from 0.003 to 0.1 * Tolerances Resistance range Tolerances toto 1% 1%from 0.003 to 1 -Q200 Qualified AEC-Q200 Qualified Tolerances to 1% Qualified * AEC-Q200 Low thermal impedance * AEC-Q200 Qualified Wide terminations enhance robustness RoHS compliant and SnPb variants All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) trical Data Value issipation Power Derating Curve 3VWatts watts alu e R003 to 1R0 ohms 3 Watts Of Power Rating % Of % Power Rating Power Power Chararating cdissipation teris@70C tic @70C 1 Resistance Range Resistance range Power dissipation @70C teristic Power Derating Curve Power Derating Curve LRF3W 100 Value 200V D ielectric w ithstand Resistance tolerance Resistance Range Ambient @70C TCR Dielectrictemp withsrange tand 3 % R003 to 1R0 -55 to Watts 2ppm/C 0+150C 0V 3 100 80 80 60 R003 to R10 100 <R004: 5, R004: 1, 2, 5 60 40 <R004: 550, % Of Power Rating Electrical Data Electrical Data Characteristic 40 20 R004: 100 80 <R004 5%, Ambient withstand temp range to +150C Dielectric volts 200 R003 to-55 1R0 Resistance tolerance R004 1, 2, 5% Ambient temperature range C -55 to +150 <R004 5%, 20 0 60 tolerance c withstandTResistance 200 25 70 CR V100p1, pm /5% C R004 2, Values E24 preferred2 Temperature in C 0 Pad trace area for maximum -55 to +150C 70 40 25 500 TCR/&trace 1300mm 00ppmm m2/2C t temp range Pad area3 Temperature in C power rating* Pad1:&Contact trace area for maximum Note factory for values outside this range. Note2 2: Many values = N x R001 and N x R005 up to N=10 are also available. 300mm <R004 5%, 20 power rating* Note 3: Recommended minimum pad & adjacent trace area for each termination for rated dissipation on FR4 PCB ce tolerance ce Range Physical Data Physical Data ace area for maximum ating* sical Data R004 1, 2, 5% 0 100ppm/C Top Top 0.81 0.13mm 0.51 0.13mm Plating wrap-around Plating wrap-around 6.5 0.38mm Top 0.51 0.13mm Bottom (Board Side) 3.25 0.25mm 70 150 with example Kelvin PCB traces 0.81 0.13mm 0.51 0.13mm 6.5 0.38mm 150 Recommended Temperature in C Solder Pad Layout Recommended Solder Pad Dimensions Recommended Recommended Solder Pad Dimensions with example PCB traces Solder Pad Kelvin Layout Bottom (Board Side) Bottom Bottom (Board Side) 300mm2 25 150 0.94 mm max thickness 0.94 mm max thickness 2.29 0.13mm 2.29 0.13mm 7.6mm Current Track: I 7.6 mm 7.6mm 2 mm Sense Tracks: V+ 2mm Recommended 1 mm V-1mm 2mm Solder Pad Layout 1mm Current Track: I 0.81 0.13mm 3.25 0.25mm Weight 0.065g typ. Weight 0.065g typ. Plating wrap-around 2.29 0.13mm 7.6mm 0.38mm 2m 1m 84 General Note Welwyn Components reserves the right to make changes in product 0.94 mm max specification without notice or liability. General Note BI Technologies IRC A Welwyn subsidiary of General Note All information is subject to Welwyn's own data and is considered accurate at time of going to print. TT Electronics reserves the right to make changes in productthickness specification without notice or liability. TT electronics plc Welwyn Components reserves the right to make changes in product specification without notice or liability. All subject to to TT Welwyn's Electronics' owndata and isis considered considered accurate atattime ofofgoing to to print. A subsidiary of Allinformation informationisComponents is subject own and accurateNE22 time going print. (c) Welwyn Limited * data Bedlington, Northumberland 7AA, UK www.ttelectronics.com/resistors 3.25 0.25mm TT electronics plc 04.10 Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com (c) TT Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK (c) Electronics plc Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com Weight 0.065g typ. 04.10 03.19 Low 3W 3W LowValue Value Chip Resistors Chip Resistors LRF3W Series Welwyn Components LRF3W Series Chips can withstand immersion in solder at 250C for 90 seconds and are suitable for reflow or wave soldering mounting applications. Construction Patented non-noble copper based thick film material and organic protection are screen printed on a 96% alumina substrate. The components are laser trimmed to achieve the required resistance tolerance. Marking The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. Chips are packed and mounted with marking side up. The LRF3W Chips are mounted with the actual resistor element mounted face down on its termination pads. Terminations The wrap-around terminations have an electroplated nickel barrier and matte tin finish, this ensures excellent `leach' resistance properties and solderability. Performance Data AEC-Q200 Table 7 ref 3 4 6 7 8 14 15 16 18 21 22 Max. Method Test High Temp. Exposure Temperature Cycling Moisture Resistance Biased Humidity Operational Life (Cyclic Load) Vibration Resistance to Soldering Heat Thermal Shock Solderability Board Flex Terminal Strength Short Term Overload Low Temperature Storage Shelf Life Test Leach Resistance Typ. (add R05) MIL-STD-202 Method 108 JESD22 Method JA-104 MIL-STD-202 Method 106 MIL-STD-202 Method 103 MIL-STD-202 Method 108 MIL-STD-202 Method 204 MIL-STD-202 Method 210 MIL-STD-202 Method 107 J-STD-002 AEC-Q200-005 AEC-Q200-006 6.25 x Pr for 2s -65C for 100 hours Room temp for 12 months Solder dip at 250C (@R20) 0.5 0.25 0.5 0.5 1 0.5 0.25 0.25 >95% coverage 0.5 0.25 0.5 0.5 0.1 90s minimum R% R% R% R% R% R% R% R% R% R% R% R% R% 0.2 0.1 0.2 0.2 0.5 0.05 0.05 0.1 0.2 0.1 Notes: 1. Full AEC-Q200 qualification applies to ohmic values R02. Packaging LRF3W Resistors are supplied taped and reeled as per IEC 286-3. The standard quantity per reel is 1800 parts. T2 Marking (Both sides) Temperature Derating 100 Temperature Rise T1 40 20 Tape dimensions in mm 0 LRF3W W 0.3 20 12 P1 P0 P2 D0 0.1 0.1 0.05 0.1 40 60 80 100 120 8Ambient4Temperature 2 (C)1.5 W 3W 2W G 100 B0 F 0.8 0.15 Temperature Rise (C) 2.5 0.5 80 2 178 2 60 0 P2 13 0.5 80 P/Pr (%) T 13 0.5mm 33 1.0 E Thermal Data P0 D0 A0 K0 D1 E F 10 0.2 0.1 0.05 100 140 160 1.5 1.75 5.5 (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK 1W D1 P1 A0 B0 K0 T T1 0.1 0.1 0.1 0.05 nom 3.61 6.96Area1.17 0.28 0.062) PCB Copper per Termination (mm T2 0.15 1000 1.45 04.10 BI Technologies IRC Welwyn General Note Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. www.ttelectronics.com/resistors (c) TT Electronics plc 03.19 85 Low Value 3W Chip Resistors LRF3W Series Pulse Power Pulse Data Power Peak Power (W) 100 10 Low Value 3W 1 Chip Resistors 0.01 0.1 LRF3W Series 1 10 Welwyn Components Pulse Duration(s) OrderingProcedure Procedure Ordering Specify type reference, value, tolerance and packing as shown in this example of LRF3W 5m* This product has two valid part numbers: 2% on a reel of 1800 pieces: Type G European (Welwyn) PartLRF3W Number:R005 LRF3W-R02FW (20 W milliohms 1%, Pb-free) Resistance value (IEC62 code)L R Tolerance (IEC62 code) F G J Packing W F 3 W - R 0 1 2 2 F W 3 4 1 2 3 Type Value Tolerance Termination & Packing F = 1% G = 2% J = 5% W Pb-free, standard packing PB SnPb finish, standard packing Standard packing is tape & reel, 1800/reel 1% 2% LRF3W E24 = 3/4 5% characters R = ohms Tape LRF3W 4 1800/reel Standard USA (IRC) Part Number: LRC-LRF3WLF-01-R020-F (20 milliohms 1%, Pb-free) L R C - L R F 1 3 W L 2 F 3 - 0 1 - R 0 4 2 5 1 2 3 4 5 6 Family Model Termination TCR Value Tolerance LRC LRF3W Omit for SnPb 01 = 100ppm/C 4 characters R = ohms LF = Pb-free 0 - F 6 F = 1% G = 2% J = 5% Electrical Data General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. Power rating @70C Resistance range1 (c) TT Electronics plc Resistance tolerance watts ohms % BI Technologies IRC Welwyn LRF3W 3 www.ttelectronics.com/resistors R003 to R10 <R004: 5, R004: 1, 2, 5 03.19